Based on the recent rise in commodities it is possible that qe3 has already been factored in and may be a nonfactor in a sense that no huge pop occurs to the upside.Zinc alone has gone from .80 to .90/lb the past month.Article below points out expectation.

http://www.bloomberg.com/news/2012-09-12/fed-seen-starting-qe3-while-extending-rate-pledge-to-2015.html